What does a "Year of Science" actually entail? Well, the Year of Science is actually a network of scientists and educators who are putting on free, open-to-the-public science events, programs, and celebrations. The general theme is that science is a positive force in the world, fun, and worthy of celebration. Every month in 2009 will have its own theme, e.g. February is Evolution. You can find local events in your neighborhood, or create an event, at www.yearofscience2009.org. Who knows - maybe we can even create an online event for the Year of Science (a bunch of science experiments on YouTube, perhaps?).
I'm a bit skeptical that people can be convinced that science is a cause worth celebrating. (Maybe if we changed the word "science.") Still, I'm happy to see people at least making an effort. Science does have an image problem, and research can be emotionally draining. Sometimes we all need a reminder that science can also be fun - and something to laugh about. I think the Year of Science is part of a larger movement trying to find the lighter side of science, such as the annual "Dance Your PhD" competition put on by the venerable AAAS (publishers of the journal Science). Here's this year's winner, it's worth watching till the end.